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JC-IO USERS MANUAL EM-9044-B
7.3 LAN Connection
PROBLEM FACED
CHECKS TO BE DONE
METHOD OF HANDLING
Unable to display the
Web browser view.
Is the URL correct?
Check the URL (Refer to 5.1 Connection).
Is the IP address correct?
Connect using a COP-US, and check the
IP address.
Is the LAN cable breakdown or dis-
connected from the HUB?
Connect the LAN cable securely.
Check the connecting LED of the HUB.
Is the POWER LED of the JC-IO ON?
Refer to 1.6 Component Identification.
Is the IP address overlapping with the
PC and the JC-IO?
Check the IP address of the PC and the
JC-IO.
Has the same network address been
specified in the IP address of the JC-
IO and PC?
Check the IP address.
Issue the ping command from the PC and
check whether there is a response.
[Example]
JC-IO : 192.168.0.1
PC : 192.168.0.2
Subnet mask: 255.255.255.0
Have firewall or proxy server setting
been configured on the PC?
Check the contents of the firewall and
proxy server setting with the network
administrator.
Is there a problem with the terminal
or PC being used?
Check the version of the terminal/browser
software.
Use a different terminal/PC.
7.4 Modbus (client)
PROBLEM FACED
CHECKS TO BE DONE
METHOD OF HANDLING
Unnable to connect
to the Modbus server
device from the JC-IO.
Is the LAN cable breakdown or dis-
connected from the HUB?
Connect the LAN cable securely.
Check the connecting LED of the HUB.
Has the IP address been set by manu-
ally?
Set the IP address manually.
(Refer to 4.3.2 Network Setting)
Has the same network address been
specified in the IP address of the JC-
IO and Modbus server device?
Check the network address.
[Example]
JC-IO: 192.168.0.1
PC: 192.168.0.2
Subnet mask: 255.255.255.0
Are the IP address of the server de-
vice registered by JCIOCFG and the
IP address of the JC-IO same?
Check the IP address.
Is the IP address set to the server
device?
Set the IP addres for server device.
When using M-System's Remote I/O
as server device, turn OFF and ON the
power after setting IP address.
(Refer to the users manual of each Re-
mote I/O for setting of IP address.)